A vast majority of scientists agree that disruption of the carbon cycle by human activities is altering the Earth’s climate and warming the planet
1.True
2.False
1
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The only gene successfully targeted for breast cancer prevention is the
a. estrogen promoter gene. b. estrogen receptor gene. c. uterine promoter gene. d. uterine receptor gene. e. breast promoter gene.
Which of the following are true regarding meiosis in human females versus males?
a. All of these options are true b. Over the course of a lifetime, a XY male will produce many more gametes than a XX female c. Mutation rates during DNA replication before meiosis increase with age in XY males d. Meiosis is arrested in one sex but not the other e. Meiosis starts during embryonic development in XX females f. Meiosis begins at puberty in XY males
The maximum number of individuals that a habitat can support indefinitely is the habitat's
A. density dispersion. B. carrying capacity. C. growth capacity. D. environmental load. E. dispersion capacity.
A certain organism has a mutation in the shelterin gene that makes it non-functional. Which of the follow consequence would you expect from this mutation?
a) Nucleosomes would not be formed so DNA can not be compacted as tightly. b) Epigenetic control would not be possible. c) The phosphodiester bonds between nucleotides would not be formed. d) DNA could not be repaired if it underwent damage. e) The telomere overhand region would become accidentally repaired, thus lengthening the chromosomes unintentionally.